At the point of calculating the shift amount, the
type of SV has changed from what it originally was.
However we need the store width of the original.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43775 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index 8312274..ed49793 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -1179,6 +1179,8 @@
// here.
unsigned SrcWidth = TD.getTypeSizeInBits(SV->getType());
unsigned DestWidth = TD.getTypeSizeInBits(AllocaType);
+ unsigned SrcStoreWidth = TD.getTypeStoreSizeInBits(SV->getType());
+ unsigned DestStoreWidth = TD.getTypeStoreSizeInBits(AllocaType);
if (SV->getType()->isFloatingPoint())
SV = new BitCastInst(SV, IntegerType::get(SrcWidth),
SV->getName(), SI);
@@ -1196,8 +1198,7 @@
// On big-endian machines, the lowest bit is stored at the bit offset
// from the pointer given by getTypeStoreSizeInBits. This matters for
// integers with a bitwidth that is not a multiple of 8.
- ShAmt = TD.getTypeStoreSizeInBits(AllocaType) -
- TD.getTypeStoreSizeInBits(SV->getType()) - Offset;
+ ShAmt = DestStoreWidth - SrcStoreWidth - Offset;
} else {
ShAmt = Offset;
}